Journal ArticleDOI
Direct Synthesis of Large-Area 2D Mo 2 C on In Situ Grown Graphene.
Dechao Geng,Xiaoxu Zhao,Zhongxin Chen,Weiwei Sun,Weiwei Sun,Wei Fu,J. C. Chen,Wei Liu,Wu Zhou,Wu Zhou,Kian Ping Loh +10 more
TLDR
The one-step direct synthesis of 2D Mo2 C-on-graphene film by molten copper-catalyzed chemical vapor deposition (CVD) is reported, showing a much lower onset voltage for hydrogen evolution reactions as compared to Mo 2 C-only electrodes.Abstract:
As a new member of the MXene group, 2D Mo2 C has attracted considerable interest due to its potential application as electrodes for energy storage and catalysis. The large-area synthesis of Mo2 C film is needed for such applications. Here, the one-step direct synthesis of 2D Mo2 C-on-graphene film by molten copper-catalyzed chemical vapor deposition (CVD) is reported. High-quality and uniform Mo2 C film in the centimeter range can be grown on graphene using a Mo-Cu alloy catalyst. Within the vertical heterostructure, graphene acts as a diffusion barrier to the phase-segregated Mo and allows nanometer-thin Mo2 C to be grown. Graphene-templated growth of Mo2 C produces well-faceted, large-sized single crystals with low defect density, as confirmed by scanning transmission electron microscopy (STEM) measurements. Due to its more efficient graphene-mediated charge-transfer kinetics, the as-grown Mo2 C-on-graphene heterostructure shows a much lower onset voltage for hydrogen evolution reactions as compared to Mo2 C-only electrodes.read more
Citations
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Journal ArticleDOI
Emerging Two-Dimensional Nanomaterials for Electrocatalysis
Huanyu Jin,Chunxian Guo,Xin Liu,Jinlong Liu,Anthony Vasileff,Yan Jiao,Yao Zheng,Shi-Zhang Qiao +7 more
TL;DR: The fundamental relationships between electronic structure, adsorption energy, and apparent activity for a wide variety of 2D electrocatalysts are described with the goal of providing a better understanding of these emerging nanomaterials at the atomic level.
Journal ArticleDOI
Electronic and Optical Properties of 2D Transition Metal Carbides and Nitrides (MXenes).
TL;DR: In this paper, the electronic and optical properties of 2D transition metal carbides, carbonitrides, and nitrides are discussed from both theoretical and experimental perspectives, as well as applications related to those properties.
Journal ArticleDOI
Two-dimensional MXenes: From morphological to optical, electric, and magnetic properties and applications
Xiantao Jiang,Artem V. Kuklin,Alexander Baev,Yanqi Ge,Hans Ågren,Hans Ågren,Han Zhang,Paras N. Prasad +7 more
TL;DR: In this article, the state-of-the-art progress on MXene theory, materials synthesis techniques, morphology modifications, opto-electro-magnetic properties, and their applications are comprehensively discussed.
Journal ArticleDOI
MXene-based materials for electrochemical energy storage
Xu Zhang,Zihe Zhang,Zhen Zhou +2 more
TL;DR: In this paper, the authors summarize the recent progress in the development of MXene with emphasis on the applications to electrochemical energy storage and discuss the future perspective and challenges of the MXene-based materials.
Journal ArticleDOI
Clay-Inspired MXene-Based Electrochemical Devices and Photo-Electrocatalyst: State-of-the-Art Progresses and Challenges.
TL;DR: This review provides an overview of the fundamental properties and synthesis routes of pure MXene, functionalized MXene and their hybrids, highlights the state-of-the-art progresses of MXene-based applications with respect to supercapacitors, batteries, electrocatalysis and photocatalysis, and presents the challenges and prospects in the burgeoning field.
References
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Journal ArticleDOI
25th Anniversary Article: MXenes: A New Family of Two‐Dimensional Materials
TL;DR: In this article, a new family of two-dimensional early transition metal carbides and carbonitrides, called MXenes, was discovered and a detailed outlook for future research on MXenes is also presented.
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
Electromagnetic interference shielding with 2D transition metal carbides (MXenes)
Faisal Shahzad,Mohamed Alhabeb,Christine B. Hatter,Babak Anasori,Soon Man Hong,Chong Min Koo,Yury Gogotsi +6 more
TL;DR: The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.
Journal ArticleDOI
Two-dimensional transition metal carbides.
Michael Naguib,Olha Mashtalir,Joshua Carle,Volker Presser,Jun Lu,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +7 more
TL;DR: Evidence is presented for the exfoliation of the following MAX phases by the simple immersion of their powders, at room temperature, in HF of varying concentrations for times varying between 10 and 72 h followed by sonication.
Journal ArticleDOI
Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall'Agnese,Patrick Rozier,Pierre-Louis Taberna,Michael Naguib,Patrice Simon,Patrice Simon,Michel W. Barsoum,Yury Gogotsi +10 more
TL;DR: This study demonstrates the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers, and provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.